... PHILIPS, NICHIA, CREE ,if make led work in standard temperature and humidity, the lifespan can up to 1000000-150000H, really very considerable Eco ... crisis of broken ,re-cycle .Green lighting, LED need to work in a very narrow voltage and current range, which need special ... conventional CFL with 120 times strobe, flicker and dazzle,very comfortable, keep the health of eyes.Advantage of our LED ...